318 lines
10 KiB
C
318 lines
10 KiB
C
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* avilib.h
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*
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* Copyright (C) Thomas <EFBFBD>streich - June 2001
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* multiple audio track support Copyright (C) 2002 Thomas <EFBFBD>streich
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*
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* Original code:
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* Copyright (C) 1999 Rainer Johanni <Rainer@Johanni.de>
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*
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* This file is part of transcode, a linux video stream processing tool
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*
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* transcode is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* transcode is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <fcntl.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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// #include <windows.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef AVILIB_H
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#define AVILIB_H
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#define AVI_MAX_TRACKS 8
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typedef struct {
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unsigned long key;
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unsigned long pos;
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unsigned long len;
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} video_index_entry;
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typedef struct {
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unsigned long pos;
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unsigned long len;
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unsigned long tot;
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} audio_index_entry;
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typedef struct track_s {
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long a_fmt; /* Audio format, see #defines below */
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long a_chans; /* Audio channels, 0 for no audio */
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long a_rate; /* Rate in Hz */
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long a_bits; /* bits per audio sample */
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long mp3rate; /* mp3 bitrate kbs*/
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long audio_strn; /* Audio stream number */
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long audio_bytes; /* Total number of bytes of audio data */
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long audio_chunks; /* Chunks of audio data in the file */
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char audio_tag[4]; /* Tag of audio data */
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long audio_posc; /* Audio position: chunk */
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long audio_posb; /* Audio position: byte within chunk */
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long a_codech_off; /* absolut offset of audio codec information */
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long a_codecf_off; /* absolut offset of audio codec information */
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audio_index_entry *audio_index;
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} track_t;
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typedef struct {
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long fdes; /* File descriptor of AVI file */
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long mode; /* 0 for reading, 1 for writing */
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long width; /* Width of a video frame */
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long height; /* Height of a video frame */
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double fps; /* Frames per second */
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char compressor[8]; /* Type of compressor, 4 bytes + padding for 0 byte */
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char compressor2[8]; /* Type of compressor, 4 bytes + padding for 0 byte */
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long video_strn; /* Video stream number */
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long video_frames; /* Number of video frames */
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char video_tag[4]; /* Tag of video data */
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long video_pos; /* Number of next frame to be read
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(if index present) */
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unsigned long max_len; /* maximum video chunk present */
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track_t track[AVI_MAX_TRACKS]; // up to AVI_MAX_TRACKS audio tracks supported
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unsigned long pos; /* position in file */
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long n_idx; /* number of index entries actually filled */
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long max_idx; /* number of index entries actually allocated */
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long v_codech_off; /* absolut offset of video codec (strh) info */
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long v_codecf_off; /* absolut offset of video codec (strf) info */
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unsigned char (*idx)[16]; /* index entries (AVI idx1 tag) */
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video_index_entry *video_index;
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unsigned long last_pos; /* Position of last frame written */
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unsigned long last_len; /* Length of last frame written */
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int must_use_index; /* Flag if frames are duplicated */
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unsigned long movi_start;
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int anum; // total number of audio tracks
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int aptr; // current audio working track
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} avi_t;
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#define AVI_MODE_WRITE 0
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#define AVI_MODE_READ 1
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/* The error codes delivered by avi_open_input_file */
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#define AVI_ERR_SIZELIM \
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1 /* The write of the data would exceed \
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the maximum size of the AVI file. \
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This is more a warning than an \
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error since the file may be closed safely */
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#define AVI_ERR_OPEN \
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2 /* Error opening the AVI file - wrong path \
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name or file nor readable/writable \
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*/
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#define AVI_ERR_READ 3 /* Error reading from AVI File */
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#define AVI_ERR_WRITE \
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4 /* Error writing to AVI File, \
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disk full ??? */
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#define AVI_ERR_WRITE_INDEX \
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5 /* Could not write index to AVI file \
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during close, file may still be \
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usable */
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#define AVI_ERR_CLOSE \
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6 /* Could not write header to AVI file \
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or not truncate the file during \
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close, file is most probably corrupted */
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#define AVI_ERR_NOT_PERM \
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7 /* Operation not permitted: \
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trying to read from a file open \
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for writing or vice versa */
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#define AVI_ERR_NO_MEM 8 /* malloc failed */
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#define AVI_ERR_NO_AVI 9 /* Not an AVI file */
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#define AVI_ERR_NO_HDRL \
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10 /* AVI file has no has no header list, \
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corrupted ??? */
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#define AVI_ERR_NO_MOVI \
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11 /* AVI file has no has no MOVI list, \
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corrupted ??? */
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#define AVI_ERR_NO_VIDS 12 /* AVI file contains no video data */
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#define AVI_ERR_NO_IDX \
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13 /* The file has been opened with \
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getIndex==0, but an operation has \
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been performed that needs an index */
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/* Possible Audio formats */
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#ifndef WAVE_FORMAT_PCM
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#define WAVE_FORMAT_UNKNOWN (0x0000)
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#define WAVE_FORMAT_PCM (0x0001)
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#define WAVE_FORMAT_ADPCM (0x0002)
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#define WAVE_FORMAT_IBM_CVSD (0x0005)
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#define WAVE_FORMAT_ALAW (0x0006)
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#define WAVE_FORMAT_MULAW (0x0007)
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#define WAVE_FORMAT_OKI_ADPCM (0x0010)
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#define WAVE_FORMAT_DVI_ADPCM (0x0011)
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#define WAVE_FORMAT_DIGISTD (0x0015)
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#define WAVE_FORMAT_DIGIFIX (0x0016)
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#define WAVE_FORMAT_YAMAHA_ADPCM (0x0020)
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#define WAVE_FORMAT_DSP_TRUESPEECH (0x0022)
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#define WAVE_FORMAT_GSM610 (0x0031)
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#define IBM_FORMAT_MULAW (0x0101)
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#define IBM_FORMAT_ALAW (0x0102)
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#define IBM_FORMAT_ADPCM (0x0103)
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#endif
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avi_t *AVI_open_output_file(char *filename);
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void AVI_set_video(avi_t *AVI, int width, int height, double fps,
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char *compressor);
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void AVI_set_audio(avi_t *AVI, int channels, long rate, int bits, int format,
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long mp3rate);
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int AVI_write_frame(avi_t *AVI, char *data, long bytes, int keyframe);
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int AVI_dup_frame(avi_t *AVI);
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int AVI_write_audio(avi_t *AVI, char *data, long bytes);
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int AVI_append_audio(avi_t *AVI, char *data, long bytes);
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long AVI_bytes_remain(avi_t *AVI);
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int AVI_close(avi_t *AVI);
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long AVI_bytes_written(avi_t *AVI);
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avi_t *AVI_open_input_file(char *filename, int getIndex);
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avi_t *AVI_open_fd(int fd, int getIndex);
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int avi_parse_input_file(avi_t *AVI, int getIndex);
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long AVI_audio_mp3rate(avi_t *AVI);
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long AVI_video_frames(avi_t *AVI);
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int AVI_video_width(avi_t *AVI);
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int AVI_video_height(avi_t *AVI);
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double AVI_frame_rate(avi_t *AVI);
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char *AVI_video_compressor(avi_t *AVI);
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int AVI_audio_channels(avi_t *AVI);
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int AVI_audio_bits(avi_t *AVI);
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int AVI_audio_format(avi_t *AVI);
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long AVI_audio_rate(avi_t *AVI);
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long AVI_audio_bytes(avi_t *AVI);
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long AVI_audio_chunks(avi_t *AVI);
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long AVI_max_video_chunk(avi_t *AVI);
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long AVI_frame_size(avi_t *AVI, long frame);
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long AVI_audio_size(avi_t *AVI, long frame);
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int AVI_seek_start(avi_t *AVI);
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int AVI_set_video_position(avi_t *AVI, long frame);
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long AVI_get_video_position(avi_t *AVI, long frame);
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long AVI_read_frame(avi_t *AVI, char *vidbuf, int *keyframe);
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int AVI_set_audio_position(avi_t *AVI, long byte);
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int AVI_set_audio_bitrate(avi_t *AVI, long bitrate);
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long AVI_read_audio(avi_t *AVI, char *audbuf, long bytes);
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long AVI_audio_codech_offset(avi_t *AVI);
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long AVI_audio_codecf_offset(avi_t *AVI);
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long AVI_video_codech_offset(avi_t *AVI);
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long AVI_video_codecf_offset(avi_t *AVI);
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int AVI_read_data(avi_t *AVI, char *vidbuf, long max_vidbuf, char *audbuf,
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long max_audbuf, long *len);
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void AVI_print_error(char *str);
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char *AVI_strerror();
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char *AVI_syserror();
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int AVI_scan(char *name);
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int AVI_dump(char *name, int mode);
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char *AVI_codec2str(short cc);
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int AVI_file_check(char *import_file);
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void AVI_info(avi_t *avifile);
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uint64_t AVI_max_size();
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int avi_update_header(avi_t *AVI);
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int AVI_set_audio_track(avi_t *AVI, int track);
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int AVI_get_audio_track(avi_t *AVI);
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int AVI_audio_tracks(avi_t *AVI);
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struct riff_struct {
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unsigned char id[4]; /* RIFF */
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unsigned long len;
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unsigned char wave_id[4]; /* WAVE */
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};
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struct chunk_struct {
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unsigned char id[4];
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unsigned long len;
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};
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struct common_struct {
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unsigned short wFormatTag;
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unsigned short wChannels;
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unsigned long dwSamplesPerSec;
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unsigned long dwAvgBytesPerSec;
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unsigned short wBlockAlign;
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unsigned short wBitsPerSample; /* Only for PCM */
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};
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struct wave_header {
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struct riff_struct riff;
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struct chunk_struct format;
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struct common_struct common;
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struct chunk_struct data;
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};
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struct AVIStreamHeader {
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long fccType;
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long fccHandler;
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long dwFlags;
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long dwPriority;
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long dwInitialFrames;
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long dwScale;
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long dwRate;
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long dwStart;
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long dwLength;
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long dwSuggestedBufferSize;
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long dwQuality;
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long dwSampleSize;
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};
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#endif
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#ifdef __cplusplus
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}
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#endif
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